Über Heterocyclen, 22. Mitt.: 3,4,6,7-Tetrahydro-5 H-pyrrolo[3,4-d]pyrimidin-2(1 H), 5-dione

Abstract

Tetrahydro-6-bromomethyl-2-oxopyrimidine-5-carboxylates react with ammonia and benzylamine, resp., to give tetrahydro-5 H-pyrrolo[3.4-d]pyrimidin-2(1 H), 5-diones. With 2-aminopyridine (A) tetrahydro-6-(2′-pyridylaminomethyl)-2-oxopyrimidine-5-carboxylates, tetrahydro-5 H-pyrrolo[3.4-d]pyrimidine-2(1 H). 5-diones as well as 5-ethoxycarbonyl-2.3.5.6-tetrahydro-2-oxospiro(pyrimidin-4(1 H)-2′(3′H)-1′H-imidazo[1.2-a]-pyridinium) bromides are formed. © 1970 Springer-Verlag.